package com.itheima.reggie.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.itheima.reggie.common.CustomException;
import com.itheima.reggie.entity.Category;
import com.itheima.reggie.entity.Dish;
import com.itheima.reggie.entity.Setmeal;
import com.itheima.reggie.mapper.CategoryMapper;
import com.itheima.reggie.service.CategoryService;
import com.itheima.reggie.service.DishService;
import com.itheima.reggie.service.SetmealService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

@Service
public class CategoryServiceImpl  extends ServiceImpl<CategoryMapper, Category> implements CategoryService {

    @Autowired
    private DishService dishService;
    @Autowired
    private SetmealService setmealService;

    @Override
    public void remove(Long id) {



        //1.根据id查询改分类中所对应的分类名称是否含有具体的菜品,他的总数是多少
        //1.1构建条件构造器,将条件添加
        LambdaQueryWrapper<Dish> dishLambdaQueryWrapper = new LambdaQueryWrapper<>();

        dishLambdaQueryWrapper.eq(Dish::getId,id);

        //1.2调用Iservice中的查询总数的方法进行查询
        int count1 = dishService.count(dishLambdaQueryWrapper);

        //1.3判断查询结果是否大于0,大于0说明改分类有具体的菜品,抛出我们自己定义的异常
        if (count1>0){
            throw new CustomException("该分类有具体的菜品");
        }
        //2.根据id查询改分类中所对应的分类名称是否含有具体的套餐,他的总数是多少
        //2.1构建条件构造器,将条件添加
        LambdaQueryWrapper<Setmeal> setmealLambdaQueryWrapper = new LambdaQueryWrapper<>();
        setmealLambdaQueryWrapper.eq(Setmeal::getId,id);
        //2.2调用Iservice中的查询总数的方法进行查询
        int count2 = setmealService.count(setmealLambdaQueryWrapper);
        //2.3判断查询结果是否大于0,大于0说明改分类有具体的套餐,抛出我们自己定义的异常
        if (count2>0){
            throw new CustomException("该分类有具体的套餐");
        }

       super.removeById(id);


        //removeById(id);
        //this.removeById(id);











      /*  //添加查询条件，根据分类id进行查询菜品数据
        LambdaQueryWrapper<Dish> dishLambdaQueryWrapper = new LambdaQueryWrapper<>();
        dishLambdaQueryWrapper.eq(Dish::getCategoryId,id);
        int count1 = dishService.count(dishLambdaQueryWrapper);
        //如果已经关联，抛出一个业务异常
        if(count1 > 0){
            throw new CustomException("当前分类下关联了菜品，不能删除");//已经关联菜品，抛出一个业务异常
        }

        //查询当前分类是否关联了套餐，如果已经关联，抛出一个业务异常
        LambdaQueryWrapper<Setmeal> setmealLambdaQueryWrapper = new LambdaQueryWrapper<>();
        setmealLambdaQueryWrapper.eq(Setmeal::getCategoryId,id);
        int count2 = setmealService.count(setmealLambdaQueryWrapper);
        if(count2 > 0){
            throw new CustomException("当前分类下关联了套餐，不能删除");//已经关联套餐，抛出一个业务异常
        }

        //正常删除分类
        super.removeById(id);*/
    }
}
